MODIFIED PROCEDURES FOR SPECIAL CONDITIONS
AVTM246004 BITE 2/2P Rev 4 July 2011
53
Sectioning Noisy UPS
Systems
The BITE 2/2P source current may be affected by the noise
generated by the switching power supply or the inverter. In
this situation, test only a few cells at a time. See Figure 5-2
and refer to the procedure explained earlier in the
subsection, “Sectioning a Battery System Greater than 275
Volts."
An alternative, although not normally recommended, is to not
apply a test signal from the
transmitter
, but to use the noise
in the system to induce the signal that is measured.
Impedance will be calculated based on the current signal as
an artifact of the noisy charger/rectifier. The
receiver
will
not take measurements if the total current is less than 3 A or
more than 15 A to maintain data reliability.
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